5,089 research outputs found
A Modified Bipolar Translinear Cell with Improved Linear Range and Its Applications
This paper presents a technique to extend the linear input voltage range of a sinh mixed translinear cell proposed by Fabre [1]. This technique extends the linear operation range of the circuit by inserting common-anode-connected pairs into the mixed translinear cell. Then the relationship between the output current and the input voltage is developed to be linear. The transconductance gain can be adjusted electronically while keeping its linearity. The performance of the proposed circuit is verified by mathematical analysis and by SPICE simulations. Finally, applications of the proposed cell in a floating resistor and a CCCII for designing an instrumentation amplifier are presented
Electronic structure of single-crystalline MgAlB probed by x-ray diffraction multipole refinements and polarization-dependent x-ray absorption spectroscopy
X-ray diffraction multipole refinements of single-crystalline
MgAlB and polarization-dependent near-edge x-ray absorption
fine structure at the B 1 edge reveal a strongly anisotropic electronic
structure. Comparing the data for superconducting compounds (, 1.0)
with those for the non-superconductor () gives direct evidence for a
rearrangement of the hybridizations of the boron bonds and underline the
importance of holes in the -bonded covalent states for the
superconducting properties of the diborides. The data indicate that Mg is
approximately divalent in MgB and suggest predominantly ionic bonds between
the Mg ions and the two-dimensional B rings. For AlB (), on the other
hand, about 1.5 electrons per Al atom are transferred to the B sheets while the
residual 1.5 electrons remain at the Al site which suggests significant
covalent bonding between the Al ions and the B sheets. This finding together
with the static electron deformation density points to almost equivalent
electron counts on B sheets of MgB and AlB\@, yet with a completely
different electron/hole distribution between the and bonds
The New Commandment John 13:34
The story is told of a visit that Bishop Ussher made to a certain Nobleman’s home. During the course of the evening meal the subject of religion was thoroughly discussed. One of the questions that, his host put to the Bishop was this: How many commandments are there? Without hesitation the bishop replied, Eleven, and quoted, as an addition to the Decalogue, the passage in St. John’s Gospel that is to serve as the basis for this thesis: A new commandment give I unto you, that ye love one another, as I have loved you, that ye also love one another
Evaluation of soft rubber goods
The performance of rubber goods suitable for use as O-rings, seals, gaskets, bladders and diaphragms under conditions simulating those of the space shuttle were studied. High reliability throughout the 100 flight missions planned for the space shuttle was considered of overriding importance. Accordingly, in addition to a rank ordering of the selected candidate materials based on prolonged fluid compatibility and sealability behavior, basic rheological parameters (such as cyclic hysteresis, stress relaxation, indicated modulus, etc.) were determined to develop methods capable of predicting the cumulative effect of these multiple reuse cycles
Multi-agent system for dynamic manufacturing system optimization
This paper deals with the application of multi-agent system concept for optimization of dynamic uncertain process. These problems are known to have a computationally demanding objective function, which could turn to be infeasible when large problems are considered. Therefore, fast approximations to the objective function are required. This paper employs bundle of intelligent systems algorithms tied together in a multi-agent system. In order to demonstrate the system, a metal reheat furnace scheduling problem is adopted for highly demanded optimization problem. The proposed multi-agent approach has been evaluated for different settings of the reheat furnace scheduling problem. Particle Swarm Optimization, Genetic Algorithm with different classic and advanced versions: GA with chromosome differentiation, Age GA, and Sexual GA, and finally a Mimetic GA, which is based on combining the GA as a global optimizer and the PSO as a local optimizer. Experimentation has been performed to validate the multi-agent system on the reheat furnace scheduling problem
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